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Approval Date: March 15, 1988

Freedom of Information Summary
NADA 140-582


NADA 140-582
Sponsor: Anthony Products Co.
5600 Peck Rd.
Arcadia, CA 91006  
Generic Name: Oxytetracycline HCl
Trade Name: Oxytetracycline Hydrochloride Injection, 50 mg and 100 mg
Marketing Status: Over-the-counter; Prescription


Oxytetracycline HCl (50 mg and 100 mg) is intended for use in the treatment of the following diseases in beef cattle and non-lactating dairy cattle when due to oxytetracycline-susceptible organisms:


In cattle, Oxytetracycline (50 mg and 100 mg) is indicated in the treatment of pneumonia and shipping fever complex associated with Pasteurella spp. and Hemophilus spp.; foot-rot and diphtheria caused by Fusobacterium necrophorum;bacterial enteritis (scours) caused by Escherichia coli; wooden tongue caused by Actinobacillus lignieresii; leptospirosis caused by Leptospira pomona; and wound infections and acute metritis caused by strains of staphylococci and streptococci organisms sensitive to oxytetracycline.

If the product contains the statement "Federal law restricts this drug to use by or on the order of a licensed veterinarian," it may contain additional directions for use in beef cattle and non-lactating dairy cattle for the treatment of anaplasmosis caused by Anaplasma marginale and anthrax caused by Bacillus anthracis.


A. DOSAGE FORM Oxytetracycline HCl Injection (50 mg/ml and 100 mg/ml) is available in 500 ml and 100 ml multidose vials containing 50 mg or 100 mg Oxytetracycline Hydrochloride per milliliter.
B. ROUTE OF ADMINISTRATION Oxytetracycline Injection (50 mg/ml and 100 mg/ml) is administered intravenously.
C. RECOMMENDED DOSAGES: The intravenous injection of 3 to 5 mg of Oxytetracycline HCl per pound of body weight per day is the recommended dosage.


An in-vitro equivalence of biological activity was conducted using the microbiological method of potency testing as described in USP XXI and comparing this biological activity with that of the Pfizer product for both the 50 mg/ml and the 100 mg/ml products. The pioneer NAS/NRC/DESI product (Pfizer) is cited in 21 CFR 522.1662a(c)(1). These conditions are NAS/NRC/DESI reviewed and deemed safe and effective. Applications for these uses need not include effectiveness data as specified by 21 CFR 514.111. However, satisfactory bioequivalency data were submitted in support of this approval. The Anthony and Pfizer 50 mg/ml products were tested and found to contain 50.4 - 53.8 and 52.4 -55.5 mg/ml oxytetracycline HCl, respectively. The 100 mg/ml generic and Pfizer products were assayed and found to contain 100.5 - 105.5 and 108.3 and 113.4 mg/ml of oxytetracycline HCl, respectively. This data is satisfactory and meets our requirements for the establishment of bioequivalency. Since the drug is indicated for intravenous use only, the drug is introduced directly into the blood stream and the bioavailability of the drug is therefore assured.


The formulations for the 50 mg/ml and the 100 mg/ml drug products have been evaluated and found chemically and microbiologically equivalent to the pioneer 100 mg/ml product. Therefore, since the products are both chemically and microbiologically equivalent and the fact that the products are indicated for intravenous use only assuring biological equivalence with 100 mg/ml the pioneer product, the 19-day withdrawal period for the pioneer product has been assigned to these products. Tissue residue data are not necessary.


The data submitted in support of this new animal drug application comply with the requirements of 512 of the Act and demonstrate that Oxytetracycline Injection 50 mg/ml and 100 mg/ml when used under its proposed condition of use are safe and effective for labeled indications.

Approval of the application poses no increased human risk from exposure to residues of oxytetracycline because the number of food producing animals receiving medication will not significantly increase and because the drug is already regulated at the requested use level.

The prescription (Rx) and over-the-counter (OTC) status is the same as the pioneer's. Therefore, this product is approved as an over the counter product as well as a prescription product.


1. Biocyl-50 box label, 500 ml vial
2. Biocyl-50 package insert, 500 ml vial
3. Biocyl-100 box label, 100 ml vial
4. Biocyl-100 box label, 500 ml vial
5. Biocyl-100 package insert, 100 ml vial
6. Agricyl-50 vial label, 500 ml vial
7. Agricyl-50 package insert
8. Agricyl-100 vial label, 100 ml vial
9. Agricyl-100 vial label, 500 ml vial
10. Agricyl-100 package insert

Copies of these labels may be obtained by writing to the:

Freedom of Information Office
Center for Veterinary Medicine, FDA
7500 Standish Place
Rockville, MD 20855